Interface XGFData_v1

Flat array containing 3D axis-aligned boundary (AABB) of each geometry's vertex positions.

Each AABB is the double-precision axis-aligned 3D boundary of its geometry's 3D vertex positions in XGFData_v1.positions.

Each AABB has the layout [minX, minY, minZ, maxX, maxY, maxZ].

To decompress a quantized vertex pUint (unsigned 16-bit integers) to get pDouble (64-bit floats), we do this:

pDouble[0] = (pUint[0] * (maxX - minX) / 65535) + minX
pDouble[1] = (pUint[1] * (maxY - minY) / 65535) + minY
pDouble[2] = (pUint[2] * (maxZ - minZ) / 65535) + minZ
Copy

Flat array containing all RGBA geometry vertex colors.

Each element is in range [0..255].

For each geometry, a pointer to the start of its portion in XGFData_v1.aabbs.

Each portion is six elements of XGFData_v1.aabbs, containing [minX, minY, minZ, maxX, maxY, maxZ].

Each AABB is the boundary of the geometry's unquantized, double-precision vertex positions, which is used in the Viewer to decompress them from 16-bit integers to double-precision floats.

For each geometry, a pointer to the start of its portion in XGFData_v1.colors.

For each geometry, a pointer to the start of its portion in XGFData_v1.edgeIndices.

For each geometry, a pointer to the start of its portion in XGFData_v1.indices.

For each geometry, a pointer to the start of its portion in XGFData_v1.positions.

For each geometry, the primitive type.

Supported types are:

• 0: Triangle mesh (same as 2)
• 1: Solid, closed triangle mesh
• 2: Triangle surface (same as 0)
• 3: Lines
• 4: Points

For each mesh, a pointer to the start of its portion in XGFData_v1.eachGeometryPositionsBase, XGFData_v1.eachGeometryColorsBase, XGFData_v1.eachGeometryIndicesBase and XGFData_v1.eachGeometryEdgeIndicesBase.

Flat array containing four material attributes for each mesh.

The attributes for each mesh are:

• Color R [0..255]
• Color G [0..255]
• Color B [0..255]
• Opacity [0..255]

For each mesh, a pointer to its matrix in XGFData_v1.matrices.

Each portion is sixteen elements, comprising a 4x4 matrix.

For each object, a unique string ID.

For each object, a pointer to its first mesh in XGFData_v1.eachMeshGeometriesBase, XGFData_v1.eachMeshMatricesBase and XGFData_v1.eachMeshMaterialAttributes.

Flat array cotaining all 32-bit geometry edge indices.

Flat array containing all 32-bit geometry indices.

Flat array containing all modeling transform matrices.

Each matrix has sixteen elements. These are 64-bit precision, and may contain huge full-precision translations that are absolute and relative to the World-space origin.

Flat array containing all quantized 3D geometry vertex positions.

These positions are quantized to 16-bit unsigned integers.